National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Fog/Mist

28°F

-2°C

Humidity 96%
Wind Speed Calm
Barometer 30.22 in (1023.6 mb)
Dewpoint 27°F (-3°C)
Visibility 6.00 mi
Last update 5 Mar 4:56 am EST
Extended Forecast for

South Dennis MA

  • Today

    Today: Rain likely, mainly after 4pm. Areas of fog before 9am, then areas of fog after 11am. Otherwise, cloudy, with a high near 39. Calm wind becoming northeast 5 to 9 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 39 °F

    Rain Likely
    and Areas Fog

  • Tonight

    Tonight: Rain. Areas of fog. Low around 36. East wind 11 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 36 °F

    Rain and
    Areas Fog

  • Friday

    Friday: Rain, mainly before 1pm. Areas of fog. High near 39. East wind around 14 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 39 °F

    Rain and
    Areas Fog
    then Rain
    Likely and
    Areas Fog

  • Friday Night

    Friday Night: Patchy fog between 7pm and 8pm. Otherwise, cloudy, with a low around 33. Northeast wind 5 to 9 mph becoming calm in the evening.

    Low: 33 °F

    Patchy Fog
    then Cloudy

  • Saturday

    Saturday: Cloudy, with a high near 46. Calm wind becoming south 5 to 9 mph in the morning.

    High: 46 °F

    Cloudy

  • Saturday Night

    Saturday Night: A chance of rain, mainly after midnight. Cloudy, with a low around 39. Southwest wind 8 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    Low: 39 °F

    Chance Rain

  • Sunday

    Sunday: A chance of rain before noon. Mostly cloudy, with a high near 49. West wind 3 to 7 mph. Chance of precipitation is 40%.

    High: 49 °F

    Chance Rain
    then Mostly
    Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 35. Calm wind becoming southwest around 5 mph after midnight.

    Low: 35 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 47. Southwest wind 5 to 9 mph.

    High: 47 °F

    Mostly Sunny

Detailed Forecast

Today
Rain likely, mainly after 4pm. Areas of fog before 9am, then areas of fog after 11am. Otherwise, cloudy, with a high near 39. Calm wind becoming northeast 5 to 9 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain. Areas of fog. Low around 36. East wind 11 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Friday
Rain, mainly before 1pm. Areas of fog. High near 39. East wind around 14 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Patchy fog between 7pm and 8pm. Otherwise, cloudy, with a low around 33. Northeast wind 5 to 9 mph becoming calm in the evening.
Saturday
Cloudy, with a high near 46. Calm wind becoming south 5 to 9 mph in the morning.
Saturday Night
A chance of rain, mainly after midnight. Cloudy, with a low around 39. Southwest wind 8 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Sunday
A chance of rain before noon. Mostly cloudy, with a high near 49. West wind 3 to 7 mph. Chance of precipitation is 40%.
Sunday Night
Partly cloudy, with a low around 35. Calm wind becoming southwest around 5 mph after midnight.
Monday
Mostly sunny, with a high near 47. Southwest wind 5 to 9 mph.
Monday Night
Partly cloudy, with a low around 37. Southwest wind around 6 mph.
Tuesday
Mostly sunny, with a high near 49. Southwest wind 6 to 8 mph.
Tuesday Night
Mostly cloudy, with a low around 37. Southwest wind 5 to 7 mph.
Wednesday
Cloudy, with a high near 48. Southwest wind 7 to 11 mph, with gusts as high as 24 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.69°N 70.16°W (Elev. 7 ft)
Last Update:
1:53 am EST Mar 5, 2026
Forecast Valid:
5am EST Mar 5, 2026-6pm EDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation